Table 1 shows one common engine and engine cooling related problems of the 2023 BMW 740.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems |
Vehicle symptom: the vehicle exhibits a persistent rough idle and engine hesitation specifically when at operating temperature. This issue is most prevalent during "auto start/stop" transitions and while idling in heavy traffic. The engine feels as though it may stall, creating a significant safety concern regarding predictable acceleration and vehicle control in live traffic. Safety risk: the instability of the engine performance creates an unpredictable driving experience. There is a high risk of the vehicle stalling or failing to accelerate properly when restarting from a stop, which could lead to a rear-end collision or leave the vehicle stranded in a dangerous intersection. Furthermore, despite these clear drivability issues and the engine's erratic behavior, the vehicle has not illuminated a check engine light (cel), depriving the driver of a necessary safety warning regarding these malfunctions.